JPS62199374A - Automatic marking device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a scribing device that automatically draws lines on a workpiece with a scribing needle.

<Prior art> For example, in the production of a work jig, as shown in FIG. It was placed on top and fixed, and the finished surface of the receiving piece 3 was machined little by little to match the model M, as shown in FIG.

<Problems to be solved by the invention> In the above-mentioned conventional method, in order to process the workpiece, that is, the receiving piece, etc. by matching the model, it is necessary to manufacture the model, which is costly and time-consuming, and requires cutting to match the model. Machining required more man-hours for finishing, which also increased time and cost.

<Means for Solving the Problems> The present invention has been made to solve the above-mentioned problems of the conventional art.
A slide table movable in the axial direction and equipped with a work jig, and a movable body guided vertically by a guide post erected in the vertical direction so as to be movable up and down in the Z-axis direction of the vertical axis, the movable body A marking device main body is provided so as to be movable forward and backward in the X-axis direction perpendicular to the X-axis direction, and the movements of the slide table, the movable body, and the marking device main body are operated by an NC control device, and the marking device main body is A housing is fixed on a base that is movable by the NC control device in the X-axis direction of the movable body, and a shaft is supported within the housing so as to be movable forward and backward in the X-axis direction, and the forward movement of this shaft causes compression. A U-shaped plate is fixed to the tip of the shaft, and a pair of U-shaped plates are provided, each of which is opposite to the other on the center line of the shaft. A scribing needle is provided, and a detector is disposed on the base at the rear end of the shaft to detect the amount of backward movement of the shaft and output a signal to the NC control device.

Function> The present invention moves the slide table, the movable body, and the scribing device main body based on NC data, and displays the surface of the workpiece attached to the workpiece jig.

To automatically draw a scribing line in a desired shape on the back side with a scribing needle.

Embodiments Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 5. In FIG. 1, lO is a fixed base. A slide table 11 movable in the X-axis direction within a plane and a guide post 13 erected in the vertical direction are provided on the fixed base 10. A work jig 12 is provided on the slide table 11 to set a work W such as a piece board, which is an object to be marked.

On the other hand, a movable body 14 is guided by the guide post 13 so as to be movable up and down in the Z-axis direction of the vertical axis. and,
This movable body 14 is provided with a marking device main body 15 that can move forward and backward in the X-axis direction orthogonal to the X-axis direction. Reference numeral 16 denotes a motor that moves the marking device main body 15 forward and backward.

These slide tables 11. The movement of the movable body 14 and the marking device main body 15 is operated by a well-known NC control device and a feeding movement device which are connected to each other.

Next, the specific structure of the marking device main body 15 will be explained with reference to FIGS. 2 to 5. A base 1 is mounted on the movable body 14 and is moved forward and backward in the X-axis direction by the motor 16.
7, and a housing 18 having a cylindrical inner diameter is fixed on this base 17. Inside this housing 18,
Axis 19 is the X-axis linear force.

Bearing bush 2Qa that can move forward and backward in both directions.

20b. A washer 21 is fixed to the outer diameter of the substantially central portion of the shaft 19 in the front-rear direction by a pin 22, and bushes 23a and 23b, which also serve as spring holders, are slidably fitted in the front and rear of the shaft 19, sandwiching the washer 21 therebetween. There is. Springs 24p and 24b are interposed between the bushings 23a and 23b and the bearing bushings 20a and 20b, respectively, to constantly urge the shaft 19 to a neutral position in its axial direction. 27a and 27b are end caps at both ends of the housing 18. Axis 19
Two surfaces are formed slightly in front of the rear end, and these two surfaces are inserted into a plate 31 that is formed to sandwich the two surfaces to prevent rotation.

A U-shaped plate 25 is fixed to the distal end of the shaft 19, and scribing needles 26a and 26b are fixed to the distal end surface of the shaft 19 and the distal end of the plate 25, facing each other on the axis of the shaft 19.

A detector 29 for detecting the amount of backward movement of the shaft 19 is installed on the base 17 at the rear end side of the shaft I9, and a pin 28 attached to the rear end surface of the shaft 19 is in contact with the detection shaft 30. The operation of the present invention in which this detector 29 transmits a detection signal of the amount of backward movement of the shaft 19 to the NC control device will be described. The workpiece W set on the workpiece jig 12 is the third
As shown in the figure, it is located between both scribing needles 26a and 26b. When marking the back side of the workpiece W, that is, the left side of the workpiece W in FIG. 3, the marking device main body 15 is moved forward (moved to the right in FIG. 3), as shown in FIG. The scribing needle 26a on the tip side of the shaft 19 is brought into contact with the back surface of the workpiece W.

The contact pressure of the scribing needle 26a is adjusted depending on the thickness of the scribing line and the hardness of the work W.

That is, the scribing needle 2 is moved forward by the scribing device main body 15.
After the shaft 6a contacts the workpiece W, the shaft 19 and the housing 1 move relative to each other. That is, the forward movement of the shaft 19 is stopped and the housing 18 is moved forward. As a result, the spring 24b on the rear side is compressed between the bearing bush 20b and the bush 23b in contact with the washer 21, and the force of the compressed spring 23b acts on the shaft 19 as a force in the forward direction, causing the marking The needle 26a acts as a force to bite into the workpiece W. The amount of relative movement between this shaft 19 and the housing 18 is measured by a detector 29, and the scribing needle 26 is set in advance by the NC control device based on a signal of this amount.
The contact pressure is automatically adjusted to a.

Then, by controlling the movement of the slide table 11 and the movable body 14 in a predetermined direction based on the NC data, a marking line of a desired shape is drawn on the workpiece W. At this time, the marking surface of the workpiece W is directed forward and backward. If the surface is warped, the shaft 19 moves forward or backward, this is detected by the detector 29, and the marking device main body 15 is moved forward or backward by the NC control device to set the marking needle as originally set. 26
The contact pressure (amount of penetration) is set to a, and the marking line is kept at a constant thickness. In addition, when marking the surface side of the workpiece W, please use the seventh
As shown in the figure, a scribing needle 26b provided on the plate 25 side
By bringing it into contact with the workpiece W, a marking line can be drawn in the same manner as above.

<Effects of the Invention> As described above, according to the present invention, it is possible to automatically draw a marking line of a desired shape on both the back and front of a workpiece by NC control, and it is possible to draw a marking line of a desired shape on both the front and back sides of the workpiece. Since cutting is performed based on the marking lines, there is no need for many finishing steps due to model matching, resulting in lower costs and shorter machining time. In addition, since the contact pressure of the marking needle is automatically adjusted according to the shape of the workpiece, it is possible to mark with a marking line of a preset constant thickness.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the present invention, Fig. 2 is an external view of the marking device main body, Fig. 3 is a cross-sectional view taken along the line ■-■ in Fig. 2, Fig. 4 is a cross-sectional view taken along the line IV--IV in Fig. 3, 5 is a view taken along the arrow V in FIG. 3, FIGS. 6 and 7 are sectional views explaining the operation of the device of the present invention, and FIG.
The figure is an explanatory diagram of the prior art, and FIG. 9 is an enlarged view of the section viewed from arrow A in FIG. IO...fixed base, ll...slide base, 12...work jig, 13...guide post, 14...movable body, 15...marking device main body,
17... Base, 18... Housing, 19...
...Shaft, 20a, 20b...Bearing bushing, 21...Washer, 23a, 23b...
Bush, 24a, 24b... Spring, 25...
... Plate, 26a, 26b ... Grading needle,
29...Detector, 30...Plate.

Claims (1)

[Claims] On the fixed base, it is movable in the Y-axis direction within a plane, and is guided by a slide table equipped with a work jig and a guide post installed vertically so that it can move up and down in the Z-axis direction of the vertical axis. a movable body, and the movable body is provided with a scribing device main body so as to be movable forward and backward in an X-axis direction perpendicular to the Y-axis direction, and the movements of the slide table, the movable body, and the scribing device main body are controlled by an NC control device. In operation, the marking device main body has a housing fixedly mounted on a base that is movable in the X-axis direction by the NC control device on the movable body, and a shaft supported within the housing so as to be movable forward and backward in the X-axis direction. A spring is compressed when the shaft moves forward, and a spring is compressed when the shaft moves backward. A U-shaped plate is fixed to the tip of the shaft, and a U-shaped plate is fixed between the tip of the shaft and the tip of the plate. A pair of scribing needles are provided facing each other on the center line of the shaft, and a detector is arranged on the base at the rear end of the shaft to detect the amount of backward movement of the shaft and send a signal to the NC control device. Automatic marking device with special features.